The good news? There will be 10 episodes airing straight through starting September 25th, as opposed to the usual 7. The bad news? That's it for Season 17. No more two part seasons, so no more episodes will air in March like usual. 10 episodes per season now, but it's not as bad as it seems.
Parker and Stone will spend the rest of the year focusing on other projects instead of South Park -they recently started their own production company- and they hope the continuous run of less episodes will increase the quality of the show and other projects.
As Stone said, “Why did we do seven and seven to begin with? We just sort of made that up. And we are switching to 10 for the same reason. It just sounded like a good number, and we won’t break up the year so we can more easily do other stuff.”
Matt and Trey haven't let us down before, so I have no doubt that this decision will work out. As long as South Park continues, I'm happy. Also, Season 17 already? Holy shit dude!
From SPS with an interview of the duo at The NY Times